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(Automatic translation)

Effect of compaction temperature on resilient modulus of asphalt mixtures

Civil Engineer - Department of asphalt mixtures - SURFAX SA de CV

Technical Director - SURFAX SA de CV

Doctor Engineer of Roads, Channels and Ports - Polytechnic University of Catalonia

Doctor Engineer - Head of Infrastructure Division of Laboratories - Mexican Transport Institute

In this paper the influence of compaction temperature on the useful life of pavements by testing resilient modulus is studied.

In this paper the resilient modules of one type of mixture containing the same aggregate (a), granulometry, asphalt content (b), type of compaction and compaction energy are evaluated; varying only the asphalt and compaction temperature.

and resilient densities of the samples compacted modules with different asphalts and different compaction temperatures are determined.

Subsequently pavement structure is proposed, and with the help of DISPAV-5 software and resilient modulus obtained for each mixture, the number of equivalent axes that resists pavement structure proposed for each type of asphalt and temperature is determined compaction.

It will be shown that by reducing the temperature of compaction the density of compacted mixture in an acceptable range is maintained, but the expected life in the pavement structure decreases significantly.

It will be shown as a better performing asphalt mix, compacted at lower temperatures than those specified, you can earn equal to or less mechanical behavior, to those of an asphalt mix with a lower theoretical performance, but compacted at a suitable temperature.

Highlighted in this work, the great importance of compaction temperature and the little importance is given when construction of a pavement.

KEYWORDS: Bitumen, Quality Control, density, equivalent shaft, Bituminous mixture, resilient module.

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